Piano roll

MIDI Editor

Load a .mid, move notes on the grid, export when it sounds right. The draft lives in this tab.

MIDI EditorLoading editor
A note grid in this tab

Open, nudge, export

Get a .mid in, put notes where they belong, take a .mid out.

  1. 01

    Load MIDI

    Open a file from disk, or arrive here from an Audio to MIDI conversion.

  2. 02

    Nudge the grid

    Drag, resize, change velocity, set BPM. Listen after each move.

  3. 03

    Export a .mid

    The tab can remember the session. Download when the file has to travel.

Notes, not audio

You are editing instructions: pitch, when it starts, how long, how hard, how fast, which sound. The original recording is untouched.

After Audio to MIDI

Delete extras, drop octaves that jumped, and snap the phrase to the click.

A new sound without a new take

Swap the patch and the tempo. The hummed line still exists as audio on your machine; this file is only the notes.

Before you edit

Is the MIDI editor free?

Yes. Moving notes in this tab does not spend credits.

Does autosave upload my project?

No. It writes to localStorage in this browser. We never get the file.

Can I edit MIDI converted from audio?

Yes. Convert first, then send the result here and clean the grid.

What if localStorage is off?

Editing still works. Download the .mid before you close the tab.

Put the notes on a grid

Load a .mid, drag what is wrong, export when it plays clean.

Open MIDI editor